Top Questions on Magnetic Effects of Current and Magnetism for 2025-26 Students
Mastering Magnetic Effects of Current and Magnetism is essential for JEE Main success, as it covers crucial laws like Biot-Savart, Ampere's, and force on moving charges. This mock test challenges your conceptual clarity on solenoids, cyclotron, magnetic fields, and more. Take the test below to identify strengths, fix weak spots, and boost your confidence before the exam!
Mock Test Instructions for the Magnetic Effects Of Current And Magnetism Mock Test 1:
- 20 questions from Magnetic Effects Of Current And Magnetism
- Time limit: 20 minutes
- Single correct answer per question
- Correct answers appear in bold green after submission
How Can JEE Mock Tests Help You Master Magnetic Effects of Current and Magnetism?
- Targeted practice on Biot-Savart law, Ampere’s law, Oersted’s experiment, and related concepts.
- Improves speed and accuracy on MCQs related to solenoids, toroids, and moving charges.
- Identifies weak spots in problem-solving for magnetic field direction and magnitude questions.
- Builds exam temperament with time-bound practice modeled on real JEE Main questions.
- Provides valuable feedback for revising key formulae and PYQ trends in magnetism.
Boost Your JEE Main Score: Expert-Designed Magnetic Effects and Magnetism Chapter Tests
- Refine application skills on force calculations for charges in magnetic fields and cyclotron principle questions.
- Test your conceptual understanding of magnetic properties and paramagnetic-diamagnetic materials.
- Learn to avoid common errors in Right-Hand Thumb Rule and direction conventions.
- Practice pattern-based and higher-order questions with full answer key explanations.
- Monitor your progress and strengthen retention by attempting mock tests periodically.
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FAQs on Magnetic Effects of Current and Magnetism: Mock Test with Solutions (2025-26)
1. What is magnetism?
Magnetism is a physical phenomenon produced by the motion of electric charges, leading to attractive or repulsive forces between objects. It is exhibited by materials like iron, cobalt, and nickel, which can attract or repel similar materials due to their **magnetic fields**.
2. State the right-hand thumb rule.
According to the right-hand thumb rule, if you hold a current-carrying conductor in your right hand so that your thumb points in the direction of conventional current, the direction of your curled fingers will indicate the direction of the **magnetic field lines** around the conductor.
3. What are magnetic field lines?
Magnetic field lines are imaginary lines used to represent the direction and strength of a **magnetic field**. They always form closed loops, emerging from the **north pole** and entering the **south pole** of a magnet.
4. What is the magnetic effect of electric current?
The **magnetic effect of electric current** is the phenomenon in which a conductor carrying an electric current produces a **magnetic field** around it. This is also known as **electromagnetism** and was first discovered by Hans Christian Oersted.
5. Name two types of magnets and give examples.
Permanent magnets retain their magnetism for a long time, e.g., bar magnet. Temporary magnets act as magnets only when exposed to a magnetic field, e.g., soft iron used in electromagnets.
6. What is an electromagnet? How is it different from a permanent magnet?
An electromagnet is formed when an electric current passes through a coil wound around a soft iron core, creating a strong magnetic field. Unlike a permanent magnet, an electromagnet’s magnetism can be switched on or off and its strength can be adjusted by changing the current or the number of coil turns.
7. What is electromagnetic induction?
**Electromagnetic induction** is the process of generating an electric current in a conductor by changing the magnetic field around it. This principle is used in **generators** and was discovered by **Michael Faraday**.
8. State Fleming’s Left-Hand Rule.
According to Fleming’s Left-Hand Rule, if you stretch the thumb, forefinger, and middle finger of your left hand perpendicular to each other: the forefinger represents the direction of the magnetic field, the middle finger points to the direction of current, and the thumb indicates the direction of force or motion on the conductor.
9. Differentiate between diamagnetic, paramagnetic, and ferromagnetic materials.
Diamagnetic materials are weakly repelled by a magnetic field (e.g., copper), paramagnetic materials are weakly attracted (e.g., aluminium), and ferromagnetic materials are strongly attracted and retain magnetism (e.g., iron).
10. What is the principle of a DC motor?
A DC motor works on the principle that a current-carrying conductor placed in a magnetic field experiences a force which causes rotary motion. This is an application of the **magnetic effect of current** and **Fleming’s Left-Hand Rule**.
11. How can the strength of an electromagnet be increased?
To increase the strength of an **electromagnet**, you can:
- Increase the number of turns in the coil
- Increase the current passing through the coil
- Use a soft iron core inside the coil
12. What are the uses of magnets in daily life?
**Magnets** are widely used in daily life, such as in electric bells, speakers, computer hard drives, magnetic door locks, MRI machines, and compasses for navigation.
